CAJ | 학술논문

采用水热法合成了一系列不同Ag2CO3含量的新型Ag2CO3/ZnO 异质结复合光催化剂，运用X射线粉末衍射(XRD)、扫描电镜(SEM)、X 射线光电子能谱(XPS)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫反射吸收光谱(UV-vis DRS)等系列手段对所制备的光催化剂进行了表征，并以紫外光(254 nm )为光源，评价了催化剂光催化降解甲基橙的活性，考察了不同 Ag2CO3复合量、不同水热温度对 ZnO 复合光催化剂反应活性的影响.结果表明，当 Ag2CO3含量为2%、水热温度为140℃，复合光催化剂具有最大的光催化活性，降解率达到86.31%.Ag2CO3/ZnO 异质结复合光催化剂具有更高的光催化活性主要原因是复合光催化剂对紫外光有很强的吸收能力，适量 Ag2CO3能提高光生电子-空穴对的分离效率，并改善催化剂的物理性能.
채용수열법합성료일계렬불동Ag2CO3함량적신형Ag2CO3/ZnO 이질결복합광최화제，운용X사선분말연사(XRD)、소묘전경(SEM)、X 사선광전자능보(XPS)、부리협변환홍외광보(FT-IR)、자외-가견만반사흡수광보(UV-vis DRS)등계렬수단대소제비적광최화제진행료표정，병이자외광(254 nm )위광원，평개료최화제광최화강해갑기등적활성，고찰료불동 Ag2CO3복합량、불동수열온도대 ZnO 복합광최화제반응활성적영향.결과표명，당 Ag2CO3함량위2%、수열온도위140℃，복합광최화제구유최대적광최화활성，강해솔체도86.31%.Ag2CO3/ZnO 이질결복합광최화제구유경고적광최화활성주요원인시복합광최화제대자외광유흔강적흡수능력，괄량 Ag2CO3능제고광생전자-공혈대적분리효솔，병개선최화제적물이성능.
A series of novel Ag2CO3/ZnO heterostructures composite photocatalysts were synthesized by hydrothermal method. The prepared photocatalysts were characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscope (FT-IR), and UV-vis diffuse reflectance spectra, respectively. The photocatalytic activity of the prepared samples was evaluated by photocatalytic degradation of methyl orange (MO) under UV light (λ=254 nm) irradiation. The different Ag2CO3 compound quantity and different hydrothermal temperature of ZnO composite photocatalyst were researched. The results show that the photocatalyst prepared with two-percent of Ag 2CO3 and 140 ℃ of hydrothermal temperature exhibits the highest photocatalytic activity, owing to the 86.31% of degradation rate. The high photocatalytic performance of the heterostructures composite photocatalysts could be attributed to the strong UV light absorption. A certain amount of Ag 2CO3 could improve the separation efficiency of the e-/h+pairs and the physical property of the catalysts.